Direction: What approximate value should come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value.) |
A) 672
B) 714
C) 469
D) 578
E) 614
Correct Answer: B
Solution :
\[{{(17.86)}^{2}}+{{(37.81)}^{2}}-{{(47.65)}^{2}}\]\[=?-1250\] or,\[?\approx {{(18)}^{2}}+{{(38)}^{2}}-{{(48)}^{2}}+1250\] \[=324+1444-2304+1250\] \[=3018-2304=714\]You need to login to perform this action.
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